drivers: qpnp-pin: Update subtype values to match hardware

The documentation followed to enumerate the subtype values was
found to differ from the actual implementation in hardware.
Update to the values actually found in the hardware.

Change-Id: I3a6d3027593bfb043b87d9c072c882981c649a6e
Signed-off-by: Michael Bohan <mbohan@codeaurora.org>